Science Magazine | AAAS: Science Advances Follow The bombardment history on the lunar farside revealed by 40Ar/39Ar geochronology of Chang’e-6 impact melt rocks | Science Advances First lunar farside 40Ar/39Ar impact melt ages from Chang’e-6 challenge the cataclysmic LHB model. https://www.science.org/doi/10.1126/sciadv.aee8718 science.org